A municipality with a population of 120,000 is under state mandate to recycle 20% of the solid waste generated by its citizens. The remaining 80% will be landfilled. The per capita waste generation rate is 2.2 kg/day. The landfilled waste in-place maximum compacted density is 820 kg/m3, and the soil-cover-to-compacted-waste ratio is 1:4 by volume. The landfill covers a rectangular area 400 m by 500 m. The maximum landfill height cannot exceed 25 m with 1:1 side slopes. What is the operating life of the landfill?

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A: Given Data:

Landfills

The landfill is a site used for the disposal of waste materials. The landfill is a solid waste facility that is often known as a dumping ground. The image below shows a landfill site in Hawaii. Landfilling is the most ancient and common method used for the disposal of waste. For the landfill, a deep trench is constructed in an isolated place away from the city. The trench for landfills is designed properly after analyzing the total population and the waste generation per capita. The waste is dumped into the trench and after every layer of waste, a layer of soil is spread on the top of it.